Describe how to prepare a 80% solution of salt water (NaCl).

Weigh 80g of Sodium chloride and dissolve it in 100ml of water.

Explanation:

The formula for weight percent (w/v) is: [Mass of solute (g) / Volume of solution (ml)] x 100. This is used to prepare a solution of a solid in a liquid.

To prepare 80% solution of sodium chloride in water, 80g of sodium chloride is dissolved in 100ml of water according to the formula above. 80g of sodium chloride is measured in an appropriate weighing balance and carefully transferred to a standard flask and made up to the 100ml mark.

3 hours because it is a decent distance.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.